Radio Shack TRS-80 Model 4 Quick Reference Guide

FOR/NEXT
FOR variable = initial value TO tinal value [STEP
incremen~
Establishes a program loop.
20 FOR H=1 TO 2 STEP -2
FRE(dummy number)
Returns the amount of free memory $Pace.
PR I NT FRE (llll)
FRE( dummy string)
Returns the amount of free string space.
PRINT FRE("1I4")
GET butter [,record number]
Gets a record from a direct disk file and places it in a
buffer.
GET 1 GET 1, 25
GOSUB line
Goes to a subroutine, beginning at the specified line.
GOSUB 1000
GOTO line
Goes to the specified line.
GOTO 100
HEX$ (number)
Calculates the hexadecimal value of number.
PRINT HE){$(30) t HE){$(50) t
IF ... THEN ... ELSE
IF expression THEN statement(s) or line ELSE
[statement(s)] or [line]
Tests a conditional expression and makes a decision
regarding program flow.
IF ){ > 127 THEN PRINT "OUT OF
RANGE" : END
IF A < B THEN PRINT "A < B" ELSE
PRINT "B A"
INKEY$
INP(porf)
Returns the byte
integer from
ato
100 A=INP(2
21

Radio Shack TRS-80 Model 4 Specifications

General

Brand	Radio Shack
Model	TRS-80 Model 4
Category	Desktop
Language	English